Which of the following is a type of information that can be obtained from the deep Web?

The correct answer is the type of information that can be obtained from the deep web, which includes websites without any links pointing to them. The deep web comprises parts of the internet that are not indexed by traditional search engines like Google or Bing. This includes databases, private corporate websites, and any web pages restricted from indexing by robots.txt files or password-protected sites.

Websites without any links pointing to them often fall into this category because they are not easily discoverable by standard search engines, making them a deep web resource. This lack of external links means the pages cannot be crawled and indexed, rendering them invisible in standard web searches.

The other options, while relevant to the broader concept of web archiving and retrieval, pertain more to specific instances or features of web content that do not directly represent the core definition of the deep web. For instance, archived versions of a page are typically available through web archiving services, but they do not represent deep web content by themselves. Similarly, old versions of web pages—and content indexed by standard search engines—do not accurately characterize the elusive nature of deep web information.